Mechanical movement



(No Model.)

H. ERRIO.

I MECHANICAL MOVEMENT? No. 291,885. Patented Jan. 15,1884.

Wimesses. fiu/ezafor.

N. FUEBS. Pholo-liUwgr-rpher. wuhingvm D. c.

Ilnrren Stains PATENT @rrion.

HENRY ERItIO, OF PHILADELPHIA, PENNSYLVANIA.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 291,885, dated January 15, 1884.

Application filed December 11, 1882. (No model.)

To all whom, it may concern.-

Be it known that I, HENRY ERRIO, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvementin Machines for I-Ioisting and Mechanical Movements, of which the following is a specification.

My invention relates to improvements in hoisting-machines. in which a lifting wheel or drum, which, having upon its periphery a ho1- low internal gear, is made to revolve by gearing into a pinion-gear having an eccentric motion imparted .to the pinion-gear by not less than two eccentrics of the same throw having uniform motion, being connected by chainbelt or suitable gearing, one eccentric forming the center of the pinion-gear and actuating the same, the second eccentric being placed outside of the periphery of the pi nion-gear and rotating in the end of an arm projecting from the pinion-gear, thus permitting all the eccentric movement, but preventing a rotary movement of the piniongear. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure l is a front view of the entire machine; Fig. 2, a side view, and Fig. 3 a section through the center, Fig. 4 showing the eccentrics with frame, hand chain-wheel, and gearing removed.

On the shaft S, I place the loosely-fitted hand chain-wheel WV, which has made solid on it or otherwise fixed the gear G and eccen tric E. On the eccentric E, I place the pinion P, which fits loosely, but is made fast to the arm-bar B, into the end of which the cocentric E revolves. I then place on shaft S the loosely-titted sprocketwheel L, which has cast or otherwise fixed to it the toothed wheel having cogs or teeth inside the periphery or rim, into which the pinion P gears. To the outside of wheel L a rope or chain is secured in any convenient manner, and is raised or lowered, according to the direction in which load-wheel L shall be rotated. In order to sustain the load in any position, it is necessary that the pinion Pv should be prevented from rotating on the eccentric on which it is mounted. To accomplish this I make solid with the pinion or otherwise affix the armbar B,which engages with the second or external eccentric, E, thus allowing the eccentric motion to the pinion P, but preventing a rotary motion to the pinion. This additional eccentric is actuated by the gear G, gearing with the gear G on the hand chain-wheel, so that the two eccentrics shall have a uniform and parallel motion.

To operate my machine it is required to rotate the wheel \V, which revolves the eccentric E, also the external eccentric, E, by suitable gearing, the two eccentrics working with parallel mot-ion, and causing the pinion-wheel to gcarinto the hollow gear on the inside of the load-wh el L, which, having one more tooth than the pinion-gear, will revolve the space of one tooth with every revolution of the two eccentrics.

I am aware that the principle of differential gearing is not new; but all other devices for holding the pinion P are subjected to one or more obj ectionssuch as a large amount of friction, unevenness of motion, or a much larger increase of extra weight.

What I do claim, and for which I desire to obtain Letters Patent, is-

1. In a mechanical movement, the combi nation of a load-wheel rotated by an internal gear, which is actuated by two eccentrics.

2. The arm 13, connecting from one eccentric to the pinion-wheel P.

3. The eccentric or crank, in combination with an armconnecting with pinion P.

4. The pulley or gear G, used to drive the eccentric E and driven by the wheel WV.

5. The wheel NV, when used to drive two eccentrics for controlling themotion of pinion P.

6. The combination of wheel L, pinion P, arm B, eccentrics E and E, gear G and G, to gether with wheel IV, all substantially as set forth.

HENRY ERRIO.

W'itnesses:

J OHN F. LEwIs, S. MANKINS. 

